It seems quite rare for a school to use pure phonics.
Because with spellings like 'only, once, other, won, woman, women' it is impossible to do so.
Schools send home the tricky high frequency words for extra practice, because until children can read the following without hesitation they cannot read fluently.
In the first 100 most HF words, 42 are not entirely decodable:
the, he, be, we, me, she,
of, to, was, want, all, call, one, said,
you, by, my, only, come, could, do, down, into, look, now, other, right, some, there, two, when, what, where, which, who, why, your,
are, have, before, more, were,
In next 200, 55 are clearly tricky:
another, any, many, saw, water, small, laughed,
bear, great, head, ready,
ever, never, every, eyes,
find, friends, giant, I?ll, I?m, key, live, river,
people, pulled, put, thought, through, were, work, would,
coming, everyone, gone,
most, mother, oh, once,
grow, how, know, snow, town, window,
book, food, good, room, school, soon, too, took, door,
Mr Mrs
Another 13 are slightly so (partly depending on accent):
after, asked, can?t, fast, last, plants
animals, dragon, magic,
clothes, cold, old, told.