The New Jersey Devils have the highest penalty-kill percentage by a team in a season, at 89.6 percent in 2011-12.

which team has the highest penalty kill percentage in a season

TEAM	PK%	SEASON	GP	W	L	T	OTL	PTS	PTS%	G	GA	PP%	S/GP	SA/GP
New Jersey Devils	89.6	2011-12	82	48	28		6	102	.622	216	205	17.2	27.48	26.82
Dallas Stars	89.3	1999-00	82	43	23	10	6	102	.622	211	184	15.7	25.60	26.62
Washington Capitals	89.2	1997-98	82	40	30	12		92	.561	219	202	15.7	27.13	27.95
Boston Bruins	89.2	1998-99	82	39	30	13		91	.555	214	181	17.7	27.59	27.15
Montreal Canadiens	88.6	2011-12	82	31	35		16	78	.476	207	214	14.3	28.54	29.66
Detroit Red Wings	88.3	1995-96	82	62	13	7		131	.799	325	181	21.3	32.29	24.17
New Jersey Devils	88.1	1996-97	82	45	23	14		104	.634	231	182	13.9	31.62	26.34
Carolina Hurricanes	88.0	2021-22	82	54	20		8	116	.707	277	200	22.0	34.12	28.17
Dallas Stars	88.0	1997-98	82	49	22	11		109	.665	242	167	20.0	26.83	22.80
Ottawa Senators	88.0	2012-13	48	25	17		6	56	.583	112	100	15.9	33.15	31.29
Buffalo Sabres	88.0	2000-01	82	46	30	5	1	98	.598	218	184	16.1	26.88	26.77
Toronto Maple Leafs	87.9	2012-13	48	26	17		5	57	.594	145	128	18.7	26.33	32.27
New Jersey Devils	87.9	2002-03	82	46	20	10	6	108	.659	216	166	11.9	31.72	23.57
St. Louis Blues	87.9	1998-99	82	37	32	13		87	.530	237	209	20.3	30.11	22.78
New York Rangers	87.8	2008-09	82	43	30		9	95	.579	200	212	13.9	32.41	29.67
St. Louis Blues	87.8	1999-00	82	51	19	11	1	114	.695	248	165	17.8	29.82	22.12
Pittsburgh Penguins	87.8	2011-12	82	51	25		6	108	.659	273	218	19.7	33.89	27.40
Minnesota Wild	87.6	2008-09	82	40	33		9	89	.543	214	197	20.1	27.52	30.71
Colorado Avalanche	87.6	1996-97	82	49	24	9		107	.652	277	205	20.6	31.95	30.21
Ottawa Senators	87.5	1999-00	82	41	28	11	2	95	.579	244	210	16.8	31.51	25.17
New Jersey Devils	87.5	1999-00	82	45	24	8	5	103	.628	251	203	20.1	33.13	25.62
Mighty Ducks of Anaheim	87.4	2002-03	82	40	27	9	6	95	.579	203	193	16.1	27.39	28.99
Minnesota Wild	87.4	2005-06	82	38	36		8	84	.512	226	212	17.0	26.76	30.00
Detroit Red Wings	87.3	1998-99	82	43	32	7		93	.567	245	202	16.1	31.98	27.01
Boston Bruins	87.3	2022-23	82	65	12		5	135	.823	301	174	22.2	32.98	29.84