What convinces a parent
Mental arithmetic is sold on a promise about concentration and ability that parents have heard from several competing centres and cannot evaluate. What settles it is seeing a child of the same age perform. Beyond that, parents want to know the level structure, how long it takes, the cost per month and the time commitment at home. Centres publishing a method description and a price are all identical to a parent comparing three of them.
What we build for a mental arithmetic school
First, video demonstrations of students by age and level, which is the only convincing evidence in this category. Second, the level structure with duration and what each stage achieves, so the commitment is legible. Third, trial lessons with a short assessment, the low-risk first step. Fourth, schedules, package pricing and home practice expectations stated honestly, since surprise at the required practice is the main cause of dropout.