Details are required of all classes running at the selected time on census day (18
January 2018). If different parts of the school use different timetable structures, then
systems should allow the school to return class information for the timetable structure
that applies to Key Stage 1.

For example, where lunch is at 12:00 hours for pupils
following a primary timetable but at 13:00 hours for pupils following a secondary
timetable, then the end of morning school should be taken to be 12:00 hours and not
13:00 hours. The ‘selected time’ is based on the last digit of a school’s departmental
establishment number as follows:

Updated 15/01/2018 at 09:30 – DFE guidance on selected time (period)

Please note the following excerpt from version 1.6 (January 2018) of the DfE School Census 2017 to 2018 Guide.

Details are required of all classes running at the selected time on census day (18 January 2018). If different parts of the school use different timetable structures, then systems should allow the school to return class information for the timetable structure that applies to Key Stage 1. For example, where lunch is at 12:00 hours for pupils following a primary timetable but at 13:00 hours for pupils following a secondary timetable, then the end of morning school should be taken to be 12:00 hours and not 13:00 hours. The ‘selected time’ is based on the last digit of a school’s departmental establishment number as follows:

Code  Descriptor 
4, 7, 8 or 9    The selected time is one hour after the start of afternoon school
0, 1, or 5 The selected time is one hour after the start of morning school
2, 3 or 6 The selected time is one hour before the end of morning school

Where the selected time is not appropriate to the school timetable: where the selected time is when the whole school or a large proportion of the school is in an assembly with the head teacher; schools can choose an hour / period that reflects a ‘normal’ class situation that applies at the selected time each Thursday of the term (see paragraph 2.1). Do not record unusual situations (such as class amalgamation or school closure) which may have occurred on census day due, for example, to staff training or absence, severe weather conditions or religious observances.

Any group of pupils receiving instruction outside the normal class framework at the selected time, including pupils in an SEN unit or special class, are treated as a separate ‘class as taught’ unless this is an atypical or