The impact of the pandemic on children has been so uneven that in classrooms across the country we are seeing a wider range of student abilities and it could be harder for those lagging behind to catch up.  A recent study shows that students in grades three to eight showed a larger spread in achievement levels this year compared to 2019.  The gap was 4-8% in reading and 5-10% in math.  Erin Einhorn, national education reporter at NBC News Digital, joins us for what to know.

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