Pls advice, i want to change my son from local to IS

hi, all

since my son studies in the local primary school, but he had too many assignment, that he can't read any books, also his academic result is below the average, and he is grade 3 now, i observe he lacks of convidence and lacks of drive to learn,

i want to apply esf, sis, cis, cdis, pls comment

thanks