Oral health is a critical component of general health. If the knowledge of oral health is lacking, the quality of life decreases not only in adults but also in children. For most of junior and senior high school students, it is likely that the “oral care” is difficult to understand. When the students visit dental office for treatment of their teeth, they cannot easily understand the contents of dental treatment and the importance of oral care. Indeed, it has been reported that among the senior high school students who visited dental office for treatment of dental caries and gingivitis, only half of the students received dental treatments. Therefore, the oral health education is very important for junior and senior high school students in order to increase the knowledge such as the dental caries and gingivitis. In a recent decade, many dental universities in Japan have been trying to have dental care classes in the junior and high school students in order not only to promote oral health care but also to teach contents of dental profession. In contrast to the dental universities, there are very few dental practitioners that have classes to junior and senior high school students in Japan. In the Shizuoka prefecture where our dental office is located, there are no dental universities. Thus, for junior and senior high school students in our prefecture, not only the evaluation of the current oral hygiene practices but also the dental care classes, which are conducted by dental practitioners, are very important for promotion of dental and oral health care. Fortunately, we have chances of giving classes of dental care to junior and high school students. So far, we have had eleven dental care classes in junior and high schools since 2012. In this editorial, we first introduce the contents of our classes. Second, we evaluated our dental classes through descriptions concerning impressions to our classes.