about good CBSE schools in chennai

 Hi everyone

we are likely to shift Chennai in a month ,our children are studing in DPS ahmedabad in 9th and 7th std.I want a good school ,new infrastructure,need some north indian crowd too , having french as 3rd language.I have not finalised our residential location just because of school,but preference is near ECR or OMR.Can they get admission just after summer vaccation?guyzzz please help!!!!!