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<p>Probably depends on their personal preferences + what kind of preparation they want. I took the June ACT right after finals, SAT, etc. It wasn’t fun, but my attitude was sort of “Alright, well, what’s one more?” I didn’t do any preparation, though. If I’d wanted to prepare, the June test may have been overwhelming. I knew that I wouldn’t spend my summer studying, and I figured I’d be just as frazzled come fall!</p>
<p>Taking the ACT in June–even without much/any preparation–might let your daughters get enough of a feel to see whether they actually do prefer it to the SAT. If they do, they can spend some of their summer working towards a re-take (if necessary); if not, they can concentrate their efforts elsewhere. I personally felt after one take that the ACT was not for me, so my own preference would be to get the “which is best?” question answered sooner than later (if registration fees are a problem, practice tests might be equally useful). </p>
<p>No option is bad, really.</p>