The warning came after reports suggested that private schools substantially increased their fees to comply with the seventh central pay commission (CPC) recommendations.
In October, the Delhi government had allowed recognised unaided private schools on Delhi Development Authority land to increase their fees by 15 per cent as an "interim" measure to comply with the CPC recommendations, which include a nearly 25 per cent increase in salaries of school teachers.
"Parents from all over Del have met me in last few days wid complaints that schools r demanding v high fee including arrears to implement 7th Pay Commission. This must stop. I have directed Edu Dept to review the whole situation n to take immediate steps to stop this (sic)," Mr Kejriwal said on Twitter.
In another tweet, he said: "No school shud victimize any student, else govt will not hesitate in taking strongest action."
Mr Kejriwal also said he has ordered the education department to review the situation and take immediate steps to stop this. The Delhi government said it was monitoring and would come out with a solution within a week.
Briefing reporters about the meeting, Deputy Chief Minister Manish Sisodia said if private schools behave like commercial institutions, the government will "not spare them".
"If private schools are found victimising students and harassing parents, the government will not hesitate in taking strongest action against them," Mr Sisodia, who holds the education portfolio, said.
Asked about the need to audit private schools' accounts, he said if needed, the government would do the same.
Yesterday, the government said that parents aggrieved with the arbitrary hike in fees by private schools would be able to register complaints with 'Fees Anomaly Committees' in each district as it has ordered disposal of the complaints within 90 days.