Thoroughness - This is the number of assessments that have been made for the selected child/group/staff's key children throughout the selected time period. Please note that this is likely to be different to the number of observations you have made as there will probably be times when you add several assessments to a single observation.
Attainment (in the Analysis section) - This is the average number of months the child is assessed at minus their age. Their assessed age is actually a range – either the whole age band if you don’t use refinements, or a third of the age band if you do use refinements (see the chart at the bottom of this tutorial for a full list of the quantitative ranges for each age band and refinement).
For example, if a child was assessed as 30-50 months secure, the range would be 43-50 months. If they were, say, 44 months old, their attainment would be 0 because they are 0 months away from being in that age bracket. If however, they were 55 months old, they would be -5 because they would be that far away from being in the bracket. If they were 42 months old, their attainment would be 1 because that’s how far they are away from being in the age band.
Attainment (in the snapshot section) - Whether a child is reaching ARE or not in snapshots can be calculated in two ways and is shown in the form of colour coding. The first way calculates it in the same way as the attainment section in analysis (as described above - by splitting each age band into 3 ranges and seeing how far their away their actual age is from the age band and refinement range that they’re in).
The second way is based purely on the age band, so, if a child was 49 months old, but had been assessed as 30-50 emerging, they would still show as on track.
You can set your preferred way from the control panel. Simply go to Settings > Summative assessments then, in the EYFS section, tick the second tick box titled 'Use refinements when assigning the colour coding for whether a child is above, at or below expectations' and press ‘Save’.
Progress - This is the difference between the attainments of the two periods you would like to see the progress between so it is really important that you understand how attainment is calculated before you look at progress.
The progress score does take into account the time that has passed, so if a child is shown to have minus progress, that doesn't mean necessarily they're actually going backwards, but rather they aren't progressing in real terms (i.e. at the same rate as they're aging). For example if a child's attainment was 3 in the first term, and 1 in the second term, their progress would be -2. Even though their attainment is still above where you would expect it to be for a child of their age, their progress is a negative number, because their attainment isn't the same amount above their age related expectation as it was in the term before.
Here is an example of how it would be calculated:
Jim has been assessed as 22-36 Developing in his snapshot for Autumn term. At the midpoint of this term he is 32 months old. Because the 22-36 Developing range is 27-31, his attainment is -1 (because he is 1 month older than we would expect children at his level of development to be).
In the Spring term Jim has been assessed as 22-36 Secure (that's the score in his summative assessment snapshot) and at the midpoint he is 35 months old. Because the 22-36 Secure range is 31-36 months his attainment is 0 (because he is in the age band and refinement range that we would expect from 35 month olds).
His progress would be his attainment of the later term (spring) minus the attainment of the earlier term (autumn), so it's 0 minus -1 which equals +1. Therefore his progress will show +1.
Hopefully this graph showing the top and bottom end of each age band and refinement will help you to visualise how attainment (and thus progress) are calculated.
It shows the child's actual age on the y axis and the age bands on the x axis.
For a child's attainment to be 0, you would need to be able to draw a line up from their assessed age and along from their actual age, and have them meet in between the two lines on the graph.
For example a 25 month old child could be in either 16-26 Secure, or 22-36 Emerging.
This table shows the top and bottom end of each age band and refinement segment (it's the same information as the graph, it's just in a different format). Please note that you can click on both the table and the graph to make them bigger.