We also do not send spellings home but also teach them in class. We teach 'tricky words' linked to letters and sounds which come in the following groups.
Phase 2: no, go, I , the, into, to
Phase 3: he, she, me, be, we, was, you, they, are, my, her, all
Phase 4: said, have, like, so, do, some, come, were, there, little, one, when
Phase 5: out, what, oh, their, people, Mr, Mrs, looked, called, asked, could
We also teach spelling words by sounding out.