There are 300 x 2/3 = <<300*2/3=200>>200 females in the school.
So, 300 - 200 = <<300-200=100>>100 are males.
Out of the 100 males, 100 x 1/10 = <<100*1/10=10>>10 are male foreign students.
Thus, there are 100 - 10 = <<100-10=90>>90 non-foreign male students.
#### 90