I feel child-led is better for social confidence and verbal skills. In terms of reading/writing/maths, it may not be fair to expect a 3-4 hour programme to prepare a child totally without home reinforcement. The ultimate choice should depend on your child’s learning style and social confidence and that is different for everyone.The one thing that I think parents with preschool children can look out for are teachers with good enunciation. The daily exposure will make a clear difference, especially if the child does not speak the language at home. My two children are very different and I picked different preschools for them.