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Maths Matters

Data QuizData Presentation NC Percentage Teacher InterventionStudent Intervention



Useful data is available to support teachers in tracking the progress of students in their classes. Data is available that allows us to estimate the likely outcome for a student in our subject based upon prior attainment. This estimate forms a base-line for that student. Attainment above the estimated grade would lead to even greater added value. By comparing a student’s forecast with their estimate it allows us to identify any under performance and put in place the necessary intervention strategies. It also allows us to check if their target is sufficiently challenging or in need of adjustment. The two key sets of data used to provide estimates are the Jesson Data and Fischer Family Trust D estimates. A brief explanation is outlined below:


Jesson Estimates: based on the work of Professor David Jesson these estimates are derived from students’ KS2 fine grade average point score. This is deemed to be the most reliable predictor and being based upon fine grades has a greater degree of discrimination than data based on whole-levels attained at KS2. Students’ KS2 fine points scores are put into one of 5 bands. National data is available as to the proportion of students gaining A*-C in various categories. This can be used to estimate the performance at Cohort, subject and class level.


FFTD Estimates: type D estimates take into account prior attainment and school context. They are based upon the progress made in previous years by students in schools that achieved a value-added score at the 25th percentile nationally. Estimated grades provide an indication of the most likely grade a student should achieve in each subject. Estimates should be used to inform discussion about expectations and targets – there should be a starting point for conversations with students along the lines of “if you make average progress you might achieve a B grade, if you make better than average it might be an A or A*- what do we want to aim for?”