She has 24 classmates and wants to give each 10 cookies, so she needs to bake 24*10=<<24*10=240>>240 cookies
Each batch makes 4 dozen cookies so that means each batch has 4*12 = <<4*12=48>>48 cookies
She baked 2 batches of chocolate chip and one batch of oatmeal raisin so 2+1 = <<2+1=3>>3 batches
We know that each batch has 48 cookies so 3*48 = <<3*48=144>>144 cookies have been baked
She needs to have 240 cookies and has baked 144 so 240-144 = <<240-144=96>>96 cookies are needed
Again, each batch makes 48 cookies and we need 96 more cookies so 96/48 = <<96/48=2>>2 more batches are needed
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