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It would depend upon what the standard meant. If you mean counting orally to 100 by the end of kindergarten, it's probably too much, but it isn't anything but rote memorization. If it means representing the numbers (showing 53 objects for the numeral), ordering them, writing them, identifying the greater and lesser of two numerals etc... then I think it is definitely too much. My state, California, has a standard that kids know their numbers to 30 in the way I described. My daughter had no problem mastering that standard, but some kids do. They're all different.

Check out World Book (the encyclopedia company)'s website for their "typical course of study" lists. They have a list for kindergarten and it will show what is typically expected.

Usually, counting to 100 is something done in first grade. They make a big deal out of it, with the 100th day being celebrated.

In kindergarten, some schools expect kids to learn to count to 20 or 30. If they can go higher by the end of the year, that's great--but it is not usually expected.

When my daughter was going to enter first grade, the kids had to go and be tested to enter first grade. She could count to a hundred, knew her colors, shapes etc. We were surprised to find out the kids were only required to count to 10. My advice check with your local public school to see what they require for beginning first grade. Children at that age have a vary of skill levels. If your child can count to a hundred great but I would not force the issue unless it was required. Children require a lot of parent teaching time during the first K5 to 5th grade.