school type
1 = community school academy
2 = voluntary aided
3 = community school only
4 = city technology college
5 = private
6 = voluntary controlled

admissions policy
1 = comprehensive
2 = selective

gender pattern
1 = male
2 = female
3 = mixed

social deprivation
1 = low
2 = middle
3 = high

big yr 13
0 = out
1 = in

fuzzy special needs
0 = fully out
0.5 = neither in nor out
0.67 = more or less in
0.83 = mostly in
1 = fully in

binary admissions policy
0 = non-selective
1 = selective

binarized social deprivation
0 = not high deprivation
1 = high deprivation

binarized type
0 = not catholic va
1 = catholic va

other than comp
0 = comp
1 = other than comp

low performance schools
0 = not low performance
1 = low performance

high performance schools
0 = not high performance
1 = high performance

high attainment sharp
0 = not high attainment
1 = high attainment

low attainment sharp
0 = not low attainment
1 = low attainment

binarized special needs
0 = no significant special needs
1 = significant special needs

reasonable size 6th form
0 = no
1 = yes

binarized special needs comps only
0 = high
1 = not high