Youngsters across Scotland attended 270,000 of the extra-curricular activity sessions in the school year 2012-13, up by 15% from the previous year.
The sportscotland figures also revealed that youngsters made a total of 5.1 million visits to these - 13% more than in 2011-12.
More than 19,000 people, including over 16,000 volunteers, were involved in running the sessions, which are supported by the Active Schools Network.
More than 100 different sports and physical activities were offered to youngsters, with the most popular being football, dance and netball.
National sports agency sportscotland provided almost £12 million of funding for the Active Schools Network last year.
Sport minister Shona Robison said the Active Schools Network was "doing terrific work across Scotland", adding: "The latest figures are extremely encouraging with record highs across the board, including over 100 different sports and physical activities being delivered.
"There are now more and better opportunities for Scotland's children and young people to take part in sport and physical activity, which will encourage them to continue to lead active lives throughout adulthood.
"Coaches and volunteers are the lifeblood of sport in Scotland, so it is excellent news that the number of people leading or taking part in Active Schools sessions has risen.
"The overwhelming number of deliverers - 85 per cent - are doing this incredible work as unpaid volunteers and deserve great credit for their time and commitment."
Louise Martin, the chair of sportscotland, hailed the "excellent figures that show increases across all Active Schools measurements".
She added: "The number of sporting and physical activity sessions has risen to 270,000, which equates to a 15% increase on last year, and pupils collectively took part in 5.1 million sessions, which is a year-on-year rise of 13%."