Indicate the university's name with the highest ranking score in Teaching.
university's name refers to university_name; highest ranking score refers to MAX(score); in Teaching refers to criteria_name = 'Teaching'
SELECT T1.university_name FROM university AS T1 INNER JOIN university_ranking_year AS T2 ON T1.id = T2.university_id INNER JOIN ranking_criteria AS T3 ON T3.id = T2.ranking_criteria_id WHERE T3.criteria_name = 'Teaching' ORDER BY T2.score DESC LIMIT 1