中小
zhōng​xiǎo

small and medium-sized

Senses

中小 zhōng​xiǎo small and medium-sized

describing something of medium and small scale

中小 zhōng​xiǎo primary and secondary schools

short for 中小学 zhōng​xiǎo​xué; relating to primary and middle school education

References

abbreviation 中小/中小 → 中小学/中小學