SELECT T2.title ,  T1.stars ,  T2.director ,  max(T1.stars) FROM Rating AS T1 JOIN Movie AS T2 ON T1.mID  =  T2.mID WHERE director != "null" GROUP BY director
For each director, what are the titles and ratings for all the movies they reviewed?
[Schema (values) (types)]: | movie_1 |  Movie : mid (text) , title (number) , year (text) , director (number) | Reviewer : rid (text) , name (number) | Rating : rid (text) , mid (number) , stars (text) , ratingdate (number);