batch_id,idenifies the school from which a text was collected text_id,unique identifier for each text. Numerals indicate the writer. Letters indicate different texts written by a single writer date_of_birth,DOB of the writer production_date,date the text was written year_group,school year group of the writer attainment_level,"attainment level of the writer, as assigned by class teacher. Different systems of attainment grading are used in different schools. Attainment usually refers to the work of the student as a whole rather than to a particular text" gender,gender of the writer ses,whether the writer is eligible for pupil premium/free school means eal,whether the writer is classified as speaking English as an additional language ethnicity,ethnicity of the writer discipline,the academic discipline within which the text was produced. This was assigned retrospectively by the project team medium,whether the text was handwritten or produced on computer genre,genre of the text. This was assigned retrospectively by the project team learning_objective,stated learning objective of the task to which the writr is responding grammar_specific_learning_objective,any specific grammatical learning objective of the task to which the writer is responding GiG_title,"text title, assigned retrospectively by the project team" context,relevant background information on the task supplementary_notes,any additional relevant information