Does anyone have reference for valuation in Ed-tech?

We are looking into an Ed-tech company with 5 products in which 1 has been deployed and generates positive cashflows, the remaining 4 will be launched later this year. EBITDA is around $1.4 million with only 1 active productredacted% logo churn in the last 3 years.
What would be a reasonable range of valuation for this company?