Sziasztok!
$cyear=$db->get_var("SELECT school_years_desc FROM school_years WHERE school_years_id=".$nyear);
Így ad-e hibaüzenetet a programod?
Vagy így:
$cyear=$db->get_var("SELECT school_years_desc FROM school_years WHERE school_years_id=".$nyear.";");
Domokos Zoltán