Radiation levels have been found to be extremely high in some Japanese school playgrounds.
All schools in the Fukushima area are now being checked under pressure from local parents.
Reports of high radioactivity beyond the Fukushima exclusion zone have raised fears that authorities are not doing all they can to tackle the crisis.
7.5 million times the legal limit of radioactive iodine has been found in seawater near the reactor.
Food safety has already been compromised, with people now frightened of eating fish because radioactive water was dumped into the sea.