I'm just a couple years ahead of you. 1957-58 were my kindergarten years. We didn't have snacks even in kindergarten (which was all day for me, and did include lunch). But we did have a mid-morning milk break and we all got our little half-pints of milk to drink every day.

We had the milk breaks for several years, at least through second grade and possibly third grade too, as those were considered the "lower elementary" grades. When we moved into the rarified air of the "upper elementary" school in 4th grade the mid-morning milk stopped also.

But we *always* celebrated birthdays in the classroom with mom-provided cupcakes, and boy did I look forward madly to those birthday celebrations. A latent carb addict in the making.