Ex England
(a)0:
Age Group
Present Form
Normal Form
10+
1 in I
I
11 +
2 in II
II
1 in IV
12 +
121
in II in III
#Be
in IV
18
Estimated No. of
years retarded
III
one year
13 +
3 in III
{IV
one year
1
in IV
14 +
1
in IV
V
one year
1 in V
1
in VI
15 +
2 in V
VI
one year
1 in VI
16+
one year