My son's first grade teacher suggested that we send notes to her in envelopes — they're more likely to make it onto her desk, and less likely to end up in a dirty wad at the bottom of the backpack. "Don't waste new envelopes," she said. "Just reuse old junk mail envelopes — scratch out the address and write my name on the front."
I knew there was a reason I liked her right away.
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