Even in the public system, how fast children learn to read is strongly correlated with their family environment, so you might as well keep them home to start. Also most parents are fully capable of teaching basic reading, writing, and arithmetic. It's in the later grades, especially high school, when trained teachers are essential.
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On Easter Day 1800, in St. Paul's Cathedral, London, six people took Communion. SIX. Clearly wasn't the fault of the internet.