Across
1.Got something out of a class (7)
8.Big name in diet pills (7)
15.Toast to good health? (7)
16.Made more baskets than (7)
17.Stoked (7)
18.__ Kiss: "Bye Bye Birdie" song (7)
19.Soissons shooting match (3)
20.Mother of twins in "Comedy of Errors." (7)
22.TV group (3)
23.Rank between family and class (4)
25.Discover (5)
26.Kincaid's partly Native American (4) (4)
27.Conception (5)
29.Long trailer? (3)
30.You can lead a horse to water but you can't make it cry wolf, e.g. (5, 8) (5)
31.Flow swiftly (6)
33.Well, lah-di-dah! (8)
35.Windy City nine (4)
37.Soften up (4)
38.Greeters. (8)
42.Class unit (6)
46.Caucasians (5)
47.Simple tercet rhyme scheme (3)
49.--- (5)
50.Certain Celt (4)
51.Supermodel Banks and namesakes (5)
53.Newspaper heads: Abbr. (4)
54.Word spoken by Michael Palin in most episodes of "Monty Python's Flying Circus" (3)
55.14th-century king of Aragon (7)
57.Football pos. (3)
58.Onetime Concord school-teacher (7)
60.10th-century German king (7)
62.One who scoffs at bagged pekoe, perhaps (7)
63.English explorer (7)
64.To make up a year/And ___: Emerson (7)
65.Surrounded by (7)
Down
1.Doctor ___ and the Forgotten Knights (2011 video game) (7)
2.President Quirino of the Philippines. (7)
3.Sch. in upstate New York (7)
4.17th Greek letter (3)
5.Early capital of Japan (4)
6.Eero Saarinen's dad (5)
7.1990 Heisman winner Ty (6)
8.Part of a machine shop. (8)
9.Quarrel (5)
10.Virginia willow (4)
11.Ocean-height standard: Abbr. (3)
12.Actress Doherty (7)
13.Program starting with the fifth year of college, informally (7)
14.Way to go! (7)
21.Shakesperean villain (4)
24.Finback whale. (7)
26.I haven't a clue! (7)
28.Sibilant sounds. (5)
30.Whither shall ___ from . . . ? (5)
32.Want-ad abbr. (3)
34.Daughter of Loki (3)
36.CT-scanner part (8)
38.Constellation, the Arrow. (7)
39.Biblical name. (7)
40.Homemade bar (7)
41.Tender, Scotch style (4)
43.Becoming unclean (7)
44.Lady's-slipper et al. (7)
45.Writer of "Passing Parade" movies. (7)
48.Native State in W. India. (6)
51.___ coffee? (5)
52.One of two options for a fantasy football player, on sports websites (5)
55.Johnson, to Juan? (4)
56.Old German rocket (4)
59.Hasty; reckless (3)
61.Suffix in chemistry. (3)