A PHP Error was encountered

Severity: Warning

Message: unlink(/var/www/html/files/sessions/ihsn_nada9c9fb77ad4aec966621883e76c13be248b17176c): No such file or directory

Filename: drivers/Session_files_driver.php

Line Number: 393

Backtrace:

File: /var/www/html/application/core/MY_Exceptions.php
Line: 224
Function: include

File: /var/www/html/application/core/MY_Controller.php
Line: 36
Function: __construct

File: /var/www/html/application/controllers/Study.php
Line: 8
Function: __construct

File: /var/www/html/index.php
Line: 355
Function: require_once

Backtrace

```
_error_handler()
```
Line #393 of /var/www/html/system/libraries/Session/drivers/Session_files_driver.php
```
unlink()
```
Line #88 of /var/www/html/system/libraries/Session/PHP8SessionWrapper.php
```
CI_Session_files_driver->gc()
```
```
CI_SessionWrapper->gc()
```
Line #137 of /var/www/html/system/libraries/Session/Session.php
```
session_start()
```
Line #1287 of /var/www/html/system/core/Loader.php
```
CI_Session->__construct()
```
Line #1180 of /var/www/html/system/core/Loader.php
```
CI_Loader->_ci_init_library()
```
Line #1045 of /var/www/html/system/core/Loader.php
```
CI_Loader->_ci_load_stock_library()
```
Line #1091 of /var/www/html/system/core/Loader.php
```
CI_Loader->_ci_load_library()
```
Line #220 of /var/www/html/system/core/Loader.php
```
CI_Loader->_ci_load_library()
```
Line #204 of /var/www/html/system/core/Loader.php
```
CI_Loader->library()
```
Line #1361 of /var/www/html/system/core/Loader.php
```
CI_Loader->library()
```
Line #159 of /var/www/html/system/core/Loader.php
```
CI_Loader->_ci_autoloader()
```
Line #88 of /var/www/html/system/core/Controller.php
```
CI_Loader->initialize()
```
Line #36 of /var/www/html/application/core/MY_Controller.php
```
CI_Controller->__construct()
```
Line #8 of /var/www/html/application/controllers/Study.php
```
MY_Controller->__construct()
```
Line #519 of /var/www/html/system/core/CodeIgniter.php
```
Study->__construct()
```
Line #355 of /var/www/html/index.php
```
require_once()
```

A PHP Error was encountered

Severity: Warning

Message: session_start(): Session cache limiter cannot be sent after headers have already been sent (output started at /var/www/html/application/core/MY_Exceptions.php:234)

Filename: Session/Session.php

Line Number: 137

Backtrace:

File: /var/www/html/application/core/MY_Exceptions.php
Line: 224
Function: include

File: /var/www/html/application/core/MY_Controller.php
Line: 36
Function: __construct

File: /var/www/html/application/controllers/Study.php
Line: 8
Function: __construct

File: /var/www/html/index.php
Line: 355
Function: require_once

Backtrace

```
_error_handler()
```
Line #137 of /var/www/html/system/libraries/Session/Session.php
```
session_start()
```
Line #1287 of /var/www/html/system/core/Loader.php
```
CI_Session->__construct()
```
Line #1180 of /var/www/html/system/core/Loader.php
```
CI_Loader->_ci_init_library()
```
Line #1045 of /var/www/html/system/core/Loader.php
```
CI_Loader->_ci_load_stock_library()
```
Line #1091 of /var/www/html/system/core/Loader.php
```
CI_Loader->_ci_load_library()
```
Line #220 of /var/www/html/system/core/Loader.php
```
CI_Loader->_ci_load_library()
```
Line #204 of /var/www/html/system/core/Loader.php
```
CI_Loader->library()
```
Line #1361 of /var/www/html/system/core/Loader.php
```
CI_Loader->library()
```
Line #159 of /var/www/html/system/core/Loader.php
```
CI_Loader->_ci_autoloader()
```
Line #88 of /var/www/html/system/core/Controller.php
```
CI_Loader->initialize()
```
Line #36 of /var/www/html/application/core/MY_Controller.php
```
CI_Controller->__construct()
```
Line #8 of /var/www/html/application/controllers/Study.php
```
MY_Controller->__construct()
```
Line #519 of /var/www/html/system/core/CodeIgniter.php
```
Study->__construct()
```
Line #355 of /var/www/html/index.php
```
require_once()
```

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /var/www/html/application/core/MY_Exceptions.php:234)

Filename: organization/layout.php

Line Number: 2

Backtrace:

File: /var/www/html/application/core/MY_Exceptions.php
Line: 224
Function: include

File: /var/www/html/themes/organization/layout.php
Line: 2
Function: header

File: /var/www/html/application/libraries/Template.php
Line: 768
Function: view

File: /var/www/html/application/controllers/Study.php
Line: 1082
Function: render

File: /var/www/html/application/controllers/Study.php
Line: 285
Function: render_page

File: /var/www/html/index.php
Line: 355
Function: require_once

Backtrace

```
_error_handler()
```
Line #2 of /var/www/html/themes/organization/layout.php
```
header()
```
Line #970 of /var/www/html/system/core/Loader.php
```
include()
```
Line #497 of /var/www/html/system/core/Loader.php
```
CI_Loader->_ci_load()
```
Line #768 of /var/www/html/application/libraries/Template.php
```
CI_Loader->view()
```
Line #1082 of /var/www/html/application/controllers/Study.php
```
Template->render()
```
Line #285 of /var/www/html/application/controllers/Study.php
```
Study->render_page()
```
Line #533 of /var/www/html/system/core/CodeIgniter.php
```
Study->variable()
```
Line #355 of /var/www/html/index.php
```
require_once()
```

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /var/www/html/application/core/MY_Exceptions.php:234)

Filename: organization/layout.php

Line Number: 3

Backtrace:

File: /var/www/html/application/core/MY_Exceptions.php
Line: 224
Function: include

File: /var/www/html/themes/organization/layout.php
Line: 3
Function: header

File: /var/www/html/application/libraries/Template.php
Line: 768
Function: view

File: /var/www/html/application/controllers/Study.php
Line: 1082
Function: render

File: /var/www/html/application/controllers/Study.php
Line: 285
Function: render_page

File: /var/www/html/index.php
Line: 355
Function: require_once

Backtrace

```
_error_handler()
```
Line #3 of /var/www/html/themes/organization/layout.php
```
header()
```
Line #970 of /var/www/html/system/core/Loader.php
```
include()
```
Line #497 of /var/www/html/system/core/Loader.php
```
CI_Loader->_ci_load()
```
Line #768 of /var/www/html/application/libraries/Template.php
```
CI_Loader->view()
```
Line #1082 of /var/www/html/application/controllers/Study.php
```
Template->render()
```
Line #285 of /var/www/html/application/controllers/Study.php
```
Study->render_page()
```
Line #533 of /var/www/html/system/core/CodeIgniter.php
```
Study->variable()
```
Line #355 of /var/www/html/index.php
```
require_once()
```

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /var/www/html/application/core/MY_Exceptions.php:234)

Filename: organization/layout.php

Line Number: 4

Backtrace:

File: /var/www/html/application/core/MY_Exceptions.php
Line: 224
Function: include

File: /var/www/html/themes/organization/layout.php
Line: 4
Function: header

File: /var/www/html/application/libraries/Template.php
Line: 768
Function: view

File: /var/www/html/application/controllers/Study.php
Line: 1082
Function: render

File: /var/www/html/application/controllers/Study.php
Line: 285
Function: render_page

File: /var/www/html/index.php
Line: 355
Function: require_once

Backtrace

```
_error_handler()
```
Line #4 of /var/www/html/themes/organization/layout.php
```
header()
```
Line #970 of /var/www/html/system/core/Loader.php
```
include()
```
Line #497 of /var/www/html/system/core/Loader.php
```
CI_Loader->_ci_load()
```
Line #768 of /var/www/html/application/libraries/Template.php
```
CI_Loader->view()
```
Line #1082 of /var/www/html/application/controllers/Study.php
```
Template->render()
```
Line #285 of /var/www/html/application/controllers/Study.php
```
Study->render_page()
```
Line #533 of /var/www/html/system/core/CodeIgniter.php
```
Study->variable()
```
Line #355 of /var/www/html/index.php
```
require_once()
```

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /var/www/html/application/core/MY_Exceptions.php:234)

Filename: organization/layout.php

Line Number: 5

Backtrace:

File: /var/www/html/application/core/MY_Exceptions.php
Line: 224
Function: include

File: /var/www/html/themes/organization/layout.php
Line: 5
Function: header

File: /var/www/html/application/libraries/Template.php
Line: 768
Function: view

File: /var/www/html/application/controllers/Study.php
Line: 1082
Function: render

File: /var/www/html/application/controllers/Study.php
Line: 285
Function: render_page

File: /var/www/html/index.php
Line: 355
Function: require_once

Backtrace

```
_error_handler()
```
Line #5 of /var/www/html/themes/organization/layout.php
```
header()
```
Line #970 of /var/www/html/system/core/Loader.php
```
include()
```
Line #497 of /var/www/html/system/core/Loader.php
```
CI_Loader->_ci_load()
```
Line #768 of /var/www/html/application/libraries/Template.php
```
CI_Loader->view()
```
Line #1082 of /var/www/html/application/controllers/Study.php
```
Template->render()
```
Line #285 of /var/www/html/application/controllers/Study.php
```
Study->render_page()
```
Line #533 of /var/www/html/system/core/CodeIgniter.php
```
Study->variable()
```
Line #355 of /var/www/html/index.php
```
require_once()
```

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /var/www/html/application/core/MY_Exceptions.php:234)

Filename: organization/layout.php

Line Number: 6

Backtrace:

File: /var/www/html/application/core/MY_Exceptions.php
Line: 224
Function: include

File: /var/www/html/themes/organization/layout.php
Line: 6
Function: header

File: /var/www/html/application/libraries/Template.php
Line: 768
Function: view

File: /var/www/html/application/controllers/Study.php
Line: 1082
Function: render

File: /var/www/html/application/controllers/Study.php
Line: 285
Function: render_page

File: /var/www/html/index.php
Line: 355
Function: require_once

Backtrace

```
_error_handler()
```
Line #6 of /var/www/html/themes/organization/layout.php
```
header()
```
Line #970 of /var/www/html/system/core/Loader.php
```
include()
```
Line #497 of /var/www/html/system/core/Loader.php
```
CI_Loader->_ci_load()
```
Line #768 of /var/www/html/application/libraries/Template.php
```
CI_Loader->view()
```
Line #1082 of /var/www/html/application/controllers/Study.php
```
Template->render()
```
Line #285 of /var/www/html/application/controllers/Study.php
```
Study->render_page()
```
Line #533 of /var/www/html/system/core/CodeIgniter.php
```
Study->variable()
```
Line #355 of /var/www/html/index.php
```
require_once()
```

Kenya - Assessing the State of Basic Education in Tetu Constituency | Mizizi Elimu Afrika Microdata Portal

Assessing the State of Basic Education in Tetu Constituency

Kenya, 2024

Reference ID

DDI-KEN-ZAF-TETU-2024

Producer(s)

Maurice Mutisya

Collections

Learner Assessment

Metadata

DDI/XML JSON

Created on

Jul 30, 2026

Last modified

Jul 30, 2026

f (letterreading2)

Data file: Tetu-Learner-Assessment-Data-2024

Overview

Valid: 938

Invalid: 471

Type: Discrete

Decimal: 0

Width: 22

Range: 0 - 2

Format: Numeric

Questions and instructions

Question pretext

Please read the letters/sound you have selected

Literal question

f

Value	Category	Cases
0	Incorrect	314	33.5%
1	Correct	624	66.5%
2	Correct answer	0	0%
Sysmiss		471