1, the trusteeship class is newly opened, and the effect is unknown. Although parents sent their children, they still have doubts about the actual effect. Therefore, he will not recommend it to others under uncertain circumstances, and will be accused of poor hosting effect. So he wants to wait and see, and refer to it if it works well.

2. There are no incentives or too few incentives. At present, the cost of raising and educating children by parents is considerable, and some parents will help introduce them if they are profitable. Then for such parents, you can tell them the reward of referral, and they will mobilize their friends around them.

3. Parents are unwilling to refer to it for personality reasons. Some parents won't tell others even if they think a place is good, for fear that other children will enjoy quality service and surpass their own children. Some parents never get contaminated with these things, only pay attention to their own children and don't care about other people's affairs.