It's a shame that moms do this... and often in front of the kids, which can taint their views before they really get to know a teacher (or other person).
My girls are entering 3rd & 5th grade and I've had 2 very similar situations over the last 6 years. Based on what I was hearing about each of these teachers, I was scared for my child at the beginning of the year. In both cases, the "mom reports" simply weren't true for OUR relationship - and I can't stress enough that every teacher has different relationships with every child and parent. One of the two that I'm referring to was an OK teacher for my oldest daughter - not a superstar, but no problems either. The other was a teacher for my youngest and was one of the BEST teachers she's ever had. My youngest has more trouble "getting" new concepts and the teacher worked well with her and with my husband and I to build her confidence in first grade and help her understand new concepts - she was absolutely wonderful! Again, everyone is going to have a different view - just like some people thing the loud, boisterous guy at the party is annoying, others think he's the life of the party - it just depends on your view.
I would however, mention the cell phone issue. In my opinion, that should be turned off in the classroom. If there's an emergency, her family and friends should know how to reach her through the school.
Finally, I might also use this as an example to your children about "gossip." The rule of thumb that we tell our girls is not to say anything about someone that you wouldn't say with them in the room. You might not like the person, but getting into the habit of gossip always ends up hurting someone.
Good luck! Hope your child has a great year - despite what other moms say.
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