Abstract: After one year's experimental study of the age of school enrollment the author drew the following conclusions:1. If children enter school at the age of six, their achievement may be lower than the seven-year-old ones at the beginning, but the difference would gradually diminish. The six-year-old children may therefore enter primary school, if the teaching method is accordingly adopted to them.2. Early school enrollment does no harm to the children's health. It shows furthermore the first grade instruction may beneficially influence the mental development of the six-year-old children.3. The level of mental development at the age of six and of seven is not like what we have estimated. At present, a small part of the content of teaching does not mit their ability, and most of the contents are too simple for the children. This may interfere the sound development of the children.4. Children can enter school at age of six and if the content of teaching is not changed, its organization and the method of teaching should be reformed. The pre-school education should be enriched.5. The content of teaching for seven-year-old children must be promoted, and the organization of teaching materials, especially the teaching method must be reformed.

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