This study examined the relationship between various variables, including anticipation of benefits and costs, and intentions to seek help from friends and others in general among junior high and high school students. The responses of 439 participants (220 junior high school students and 219 high school students) who took part in an online survey were used for the analysis. As a result of the simultaneous multi-population analysis, an equality-constrained model was adopted, which assumed that the association of each variable with the intention to seek help was the same between junior high school students and high school students. Results indicated that subjective needs and the anticipated benefits of seeking help were positively related to help-seeking intentions. The associations of the variables with the intention to seek help were generally similar between the intention to seek help from junior and senior high school students or friends and the intention to seek help from other people in general.