Without doubt you are throwing perfectly able applicants in the bin by dumping those without strong school grades.
But so what? There are still plenty of perfectly able applicants left in the pile with strong school grades. They might then be perfectly arbitrary and dump any CV's from people under or over a certain age (though that is now illegal it still is common).
Its BRUTAL when you have hundreds of applicants for every position. You use brute force and arbitrary rules to whittle down to a manageable interviewable size.
That's how it is.
200hrs and some mediocre school grades is not going to float anyones boat and your CV will be ripe for the bin.
Cheers
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