Police are now asking for witnesses following the incident, which happened in Watmore Lane, Winnersh, on Wednesday.
The girl was walking to school at about 8.40am when a white high-top van with two men pulled up beside her. The driver, believed to be Asian, asked the girl if she would sit next to him.
The girl ran away and hid behind some signage, while the van drove away. A parent then walked with her to school, where the incident was reported to police.
The girl was unharmed.
The van is reported to have a 61 registration plate with a red sticker approximately 8ins by 2ins in size, above the rear bumper.
Investigating officer PC Tin Yau Wong from Wokingham police station said: “We are investigating this incident thoroughly and as a precaution asking the local community to remain vigilant and report any suspicious person or vehicle matching this description to the police.
“Incidents such as these are unusual and we investigate all such reports. If you have any concerns, please speak to your local neighbourhood policing team who will be on patrol in the area”.
If you witnessed this incident or have any information that may assist the investigation, please contact PC Wong of Wokingham police station via the Thames Valley Police Enquiry Centre on 101.