This file is useful.
The family allowance is paid for all children up to the age of eighteen. From 1st January, 2007, the period during which the family allowance is paid has been prolonged up to the age of 25 for children undergoing training, and up to age 21 for children without a job. For children undergoing training, who reach the age of 26 and 27 years (birth years 1980-1981), the period during which the family allowance is paid will be continued up to the age of 27; for children undergoing training, who turn 25 in 2007 (birth year 1982), it will be paid until the age of 26 years. Should military or civilian service (which suspend the payment of family allowance) be undertaken by the child during this period, the maximum age-limit is adjusted correspondingly. There is no age-limit for handicapped children who are unable to earn their living.
As is this whole thread.