Disappointment from some primary school teachers, over some signing up after the industrial action that has brought an agreement.
The Ministry and NZEI signed a pay agreement last month, which gives union members a $1500 lump sum payment.
Some have complained online that some teachers have just joined up now to get the extra money.
But NZEI President Mark Potter says they're happy to welcome more sign ups.
"In our view, the maximum number of people we can get involved in the union the better. Because it is recognised that it is good to have a really unified, professional group."
LISTEN ABOVE
Take your Radio, Podcasts and Music with you
