Break in school meals initially is welcomed (6)
I believe the answer is:
schism
'break' is the definition.
(I know that schism is a type of break)
'school meals initially is welcomed' is the wordplay.
'school' becomes 'sch' (abbreviation).
'initially' says to take the initial letters.
'welcomed' indicates putting letters inside (inserted letters are welcomed in).
The first letter of 'meals' is 'm'.
'sch'+'m'='schm'
'schm' placed around 'is' is 'SCHISM'.
'in' acts as a link.
(Other definitions for schism that I've seen before include "Deep division" , "Friction or division in church organisation" , "Formal separation of a church into two churches" , "Dividing of group into opposing factions" , "Difference in religious beliefs within a church" .)