Multiple Validation Summaries - 1 Submit Button

I've got a data entry page with a lot of validated controls.  I've
divided the page into 3 logical groupings (Personal, Educational,
References) and I would like to have 3 different validation groups and
summaries, so that each listing would appear closer to the relevant
control(s), with a single Submit button at the bottom.

Is this possible?  How would I tell the button to validate more than one group?

Thanks.
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