General help

Well, I don't know if you would really have to "hack" anything as the database activity does have CSS Template and Javascript template listed under the Template tab. Might be worth a try.

Possible with the new version of the Dataform for Moodle 2.6 scheduled to be released beginning of April.

Here is a simple scenario in Gherkin language (which means that this is a working testable scenario) for the described use case.

This scenario prevents student updates of teacher fields but not vice versa. A more complex set up employing other features of the Dataform can allow you to set update permissions per field per role.

Setting a fixed interval and max entries is not necessary but offers the benefit of event calendar for each interval as a reminder for students and ensuring that submissions observe the schedule.

Feature: Self assessment in 4 weeks interval with teacher input
    Students must submit a self-assessment in intervals - a series of multiple choice and text responses.
    Once submitted teacher to be able to see it, and respond to each of the same questions themselves.  
    In the end, both student's and teacher's responses are visible together on the same form. In the end, both the teacher and student should be able to see both responses to each question.

    @javascript
    Scenario: 4 weeks interval, multiple choice and text response, student cannot update or delete after submission
        # 129 steps

        ### Activity setup ###

        Given I start afresh with dataform "Test Dataform"
        And the following "permission overrides" exist:
            | capability                    | permission    | role           | contextlevel    | reference |
            | mod/dataform:entryownupdate   | Prevent       | student        | Activity module | dataform1 |
            | mod/dataform:entryowndelete   | Prevent       | student        | Activity module | dataform1 |

        When I log in as "teacher1"
        And I follow "Course 1"
        And I follow "Test Dataform"
        Then I should see "This dataform appears to be new or with incomplete setup"

        # Set the time interval and separate participants
        #---------------------------
        When I follow "Edit settings"
        And I expand all fieldsets       
        And I set the field "Maximum entries" to "1" 
        And I set the field "id_timeavailable_enabled" to "checked" 
        And I set the field "timeinterval[number]" to "4" 
        And I set the field "timeinterval[timeunit]" to "weeks" 
        And I set the field "Number of intervals" to "10" 
        And I set the field "Separate participants" to "Yes" 
        And I press "Save and display"
        Then I should see "This dataform appears to be new or with incomplete setup"

        # Add a text and select fields for student responses
        #---------------------------
        Then I go to manage dataform "fields"
        And I add a dataform field "text" with "Student Response 01"        
        And I add a dataform field "select" with "Student Response 02"
        And I follow "Student Response 02"
        And I set the field "Options" to
            """
            Never
            Rarely
            Frequently
            Always
            """
        And I press "Save changes"

        # Add a text and select fields for teacher responses (non-editable) so that students cannot edit 
        #---------------------------
        Then I add a dataform field "text" with "Teacher Response 01"        
        And I follow "Teacher Response 01"
        And I set the field "Editable" to "No"
        And I press "Save changes"

        Then I add a dataform field "select" with "Teacher Response 02"        
        And I follow "Teacher Response 02"
        And I set the field "Editable" to "No"
        And I set the field "Options" to
            """
            Never
            Rarely
            Frequently
            Always
            """
        And I press "Save changes"

        # Add a view with with default submission buttons
        #---------------------------
        When I follow "Views"
        And I set the field "Add a view" to "grid"
        And I set the field "Name" to "View 01"
        And I press "Save changes"

        Then I should see "View 01"
        And I should see "Default view is not set."
        When I set view "View 01" as default view
        Then I should not see "Default view is not set."

        And I log out

        ### INTERVAL 1 ###

        # Student 1 submits self assessment and can update only the student responses
        #---------------------------------------------
        When I log in as "student1"
        And I follow "Course 1"
        And I follow "Test Dataform"
        Then I should see "Add a new entry"

        When I follow "Add a new entry"
        Then "field_1_-1" "field" should exist
        And "field_2_-1_selected" "field" should exist
        But "field_3_-1" "field" should not exist
        And "field_4_-1_selected" "field" should not exist

        And I set the field "field_1_-1" to "Student response to item 01 in Submission 01"
        And I set the field "field_2_-1_selected" to "Frequently"
        And I press "Save"
        Then I should see "Student response to item 01 in Submission 01"
        And I should see "Frequently"
        And I should not see "Add a new entry"
        And "id_editentry1" "link" should not exist
        And "id_deleteentry1" "link" should not exist

        And I log out

        # Teacher adds teacher responses to student 1 submission
        #---------------------------
        When I log in as "teacher1"
        And I follow "Course 1"
        And I follow "Test Dataform"
        Then I should see "Student response to item 01 in Submission 01"

        When I follow "id_editentry1"
        Then "field_1_1" "field" should exist
        And "field_2_1_selected" "field" should exist
        And "field_3_1" "field" should exist
        And "field_4_1_selected" "field" should exist

        Then I set the field "field_3_1" to "Teacher response to item 01 in Submission 01"
        And I set the field "field_4_1_selected" to "Rarely"
        And I press "Save"
        Then I should see "Student response to item 01 in Submission 01"
        And I should see "Teacher response to item 01 in Submission 01"
        And I should see "Frequently"
        And I should see "Rarely"

        And I log out

        # Student 1 views own and teacher responses
        #---------------------------------------------
        When I log in as "student1"
        And I follow "Course 1"
        And I follow "Test Dataform"
        Then I should see "Student response to item 01 in Submission 01"
        And I should see "Teacher response to item 01 in Submission 01"
        And I should see "Frequently"
        And I should see "Rarely"

        And I log out

        # Student 2 cannot view student 1 submission
        #---------------------------------------------
        When I log in as "student2"
        And I follow "Course 1"
        And I follow "Test Dataform"
        Then I should not see "Student response to item 01 in Submission 01"
        And I should not see "Teacher response to item 01 in Submission 01"
        And I should not see "Frequently"
        And I should not see "Rarely"

        And I log out

All, hi

to add to the mix, I have used and know of others who have used audio feedback mid term...so a summary/overall comment audio file in response to a series of questions for each student.  I think P'dle plug in might work for that too. End of term evals-well I only really have experience of  online student responses and then the module feedback is fed forward into module/course evaluation for the following semester with the new lot of students. Wagging tail near wrong tree here-probs   

hh

Dawn