Custom skill bit flag table:
Where r0 contains the class number of the potential skill user
add r1, r0, #0x0
mov r2, #0x80
mov r3, #0x7
ldr r4 =$"Skill Table"
and r1, r3
asr r2, r1
asr r0, r0, #0x3
add r4, r4, r0
ldrb r4, [r4, #0x0]
and r4, r2
cmp r4, #0x0
bgt $"Skill"