What are the solar terms in primary and secondary schools?

I would like to ask which solar term Xiaoxue is among the 24 solar terms. The twentieth. 24 solar terms is: beginning of spring, rainy, stinging, vernal equinox, Qingming, Grain Rain, Changxia, Xiaoman, Mangzhong, Summer Solstice, Slight Summer, beginning of autumn, Early Summer, White Dew, Autumn Equinox, Cold Dew, Early Frost, beginning of winter, Light Snow, Heavy Snow, Winter Solstice, Slight Cold and Severe Cold.