One parent said many children were disfigured or crippled in the attack and need continuous, long-term treatment and psychological rehabilitation.
A local health official said there had been delays in families submitting receipts for the money they have spent.
Last year nine heavily-armed Islamic extremists scaled the walls of the school and killed more than 140 people, 134 of them children, before being killed or blowing themselves up.
Two weeks ago, Pakistan hanged four men for their involvement in the massacre.
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