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For the 2019 season, the NJSIAA’s OSI – or Opponent Strength Index – will help determine 60% of playoff seeding, along with traditional power points accounting for 40%.  The OSI is an average of the Strength Index numbers of opponents, figuring full value for a win and half value for a loss.  (A tie gets 3/4 value.)

Strength Index is determined by figuring the difference between two teams as the expected result.  Team A being 90 and Team B being 80 is an expected result of 10 for Team A.

Take the winning team’s margin versus the expected result (Team A winning by 20 is a +10 over the expected result) and divide by 5 (10 divided by 5) and get 2.  the winning team goes up 2 points, the losing team goes down 2 points.

The new value determines what is used in the OSI.  Strength Index values change with every game played.  Beating an 80 in Week 1 might yield you only 70 points if that team trailed off throughout the course of the year.

The state’s official calculator – Gridiron New Jersey – keeps track of Strength Index, but it is only on individual team pages.  There is no page of all teams, or teams put together by Group Size.

WCTC Sports does its own unofficial calculations.  This week, they all coincide with Gridiron’s official numbers.  (We did it right!)

So, here are the latest statewide Strength Index numbers heading into Week 4.  Scroll to the bottom of the list for the Top 20 in the state.

1 Absegami 51.45
2 Allentown 53.74
3 Asbury Park 55.02
4 Atlantic City 55.11
5 Audubon 47.91
6 Barnegat 50.59
7 Barringer 60.66
8 Bayonne 64.01
9 Becton 55.15
10 Belleville 52.04
11 Belvidere 43.15
12 Bergen Catholic 93.57
13 Bergen Tech 43.19
14 Bergenfield 60.31
15 Bernards 70.55
16 Bishop Eustace 42.84
17 Bloomfield 42.55
18 Bogota 33.62
19 Boonton 63.02
20 Bordentown 26.49
21 Bound Brook 56.88
22 Brearley 51.91
23 Brick Memorial 63.21
24 Brick Twp. 64.53
25 Bridgeton 40.95
26 Bridgewater-Raritan 68.10
27 Buena 69.71
28 Burlington City 56.41
29 Burlington Twp. 73.29
30 Butler 71.30
31 Caldwell 49.30
32 Camden 81.29
33 Camden Catholic 39.62
34 Carteret 44.05
35 Cedar Creek 77.47
36 Cedar Grove 65.95
37 Central 57.39
38 Chatham 37.22
39 Cherokee 72.26
40 Cherry Hill East 34.02
41 Cherry Hill West 49.38
42 Cinnaminson 52.73
43 Clayton 41.50
44 Clearview 77.32
45 Cliffside Park 41.52
46 Clifton 71.00
47 Collingswood 59.40
48 Colonia 65.17
49 Colts Neck 53.58
50 Columbia 52.79
51 Cranford 68.47
52 Cresskill 64.29
53 Cumberland 32.91
54 Dayton 24.77
55 Delaware Valley 72.70
56 Delbarton 76.19
57 Delran 72.01
58 Delsea 71.60
59 Demarest 63.10
60 DePaul 80.05
61 Deptford 63.90
62 Dickinson 15.83
63 Don Bosco Prep 85.52
64 Donovan Catholic 86.49
65 Dover 15.29
66 Dumont 64.69
67 Dunellen 41.79
68 Dwight Englewood 20.00
69 East Brunswick 47.68
70 East Orange 76.14
71 Eastern 62.44
72 Eastside (Paterson) 56.06
73 Edison 62.40
74 Egg Harbor 44.75
75 Elizabeth 55.55
76 Elmwood Park 24.17
77 Emerson 57.91
78 Englewood 52.39
79 Ewing 38.33
80 Fair Lawn 36.98
81 Ferris 15.15
82 Florence 47.75
83 Fort Lee 25.56
84 Franklin 55.44
85 Freehold Boro 55.05
86 Freehold Twp. 58.17
87 Garfield 63.72
88 Gateway 78.86
89 Glassboro 61.15
90 Glen Ridge 43.34
91 Glen Rock 57.29
92 Gloucester Catholic 33.86
93 Gloucester City 34.75
94 Governor Livingston 44.22
95 Hackensack 55.13
96 Hackettstown 49.49
97 Haddon Heights 49.39
98 Haddon Twp. 47.82
99 Haddonfield 84.49
100 Hamilton 50.89
101 Hammonton 70.83
102 Hanover Park 50.86
103 Harrison 45.86
104 Hasbrouck Hts. 72.78
105 Hawthorne 67.65
106 High Point 56.70
107 Highland Park 10.70
108 Highland Reg. 75.95
109 Hightstown 44.95
110 Hillsborough 73.81
111 Hillside 83.68
112 Hoboken 61.36
113 Holmdel 71.98
114 Holy Cross 45.88
115 Holy Spirit 75.09
116 Hopatcong 40.02
117 Hopewell Valley 59.81
118 Howell 50.42
119 Hudson Catholic 53.50
120 Hunterdon Central 69.64
121 Immaculata 48.65
122 Immaculate Conception 51.35
123 Indian Hills 39.16
124 Irvington 72.68
125 Jackson 65.27
126 Jackson Liberty 38.37
127 Jefferson 57.52
128 JFK 48.53
129 Johnson 56.65
130 JP Stevens 35.08
131 Keansburg 46.16
132 Kearny 36.22
133 Kennedy 65.99
134 Keyport 38.82
135 Kingsway 67.99
136 Kinnelon 50.71
137 Kittatinny 69.78
138 Lacey 66.53
139 Lakeland 58.07
140 Lakewood 36.34
141 Lawrence 40.26
142 Lawrenceville 54.40
143 Lenape 84.05
144 Lenape Valley 63.39
145 Lincoln 67.34
146 Linden 61.36
147 Lindenwold 26.99
148 Livingston 56.53
149 Lodi 38.91
150 Long Branch 68.05
151 Lower Cape May 35.16
152 Lyndhurst 63.17
153 M.K.A. 29.10
154 Madison 56.57
155 Mahwah 63.73
156 Mainland 66.43
157 Manalapan 68.87
158 Manasquan 66.93
159 Manchester Regional 47.64
160 Manchester Twp. 44.38
161 Manville 25.13
162 Maple Shade 37.00
163 Marist 20.04
164 Marlboro 55.72
165 Matawan 46.20
166 Mater Dei 97.51
167 Memorial 24.63
168 Mendham 41.34
169 Metuchen 33.51
170 Middle Township 53.89
171 Middlesex 66.49
172 Middletown North 62.57
173 Middletown South 71.28
174 Millburn 56.78
175 Millville 65.94
176 Monmouth 40.32
177 Monroe 45.29
178 Montclair 64.97
179 Montgomery 67.70
180 Montville 74.04
181 Moorestown 74.21
182 Morris Catholic 61.48
183 Morris Hills 68.03
184 Morris Knolls 62.71
185 Morristown 54.87
186 Morristown-Beard 37.40
187 Mount Olive 61.83
188 Mountain Lakes 60.22
189 Neptune 67.64
190 New Brunswick 67.38
191 New Egypt 38.25
192 New Milford 54.62
193 New Providence 46.34
194 Newark Academy 19.46
195 Newark Central 45.02
196 Newark Collegiate 47.53
197 Newark East Side 14.01
198 Newark West Side 71.36
199 Newton 61.70
200 No. Burlington 59.30
201 North Arlington 21.04
202 North Bergen 61.03
203 North Brunswick 80.30
204 North Hunterdon 58.68
205 North Plainfield 50.47
206 North Warren 40.26
207 Northern Highlands 69.17
208 Notre Dame 75.93
209 Nottingham 61.01
210 Nutley 52.65
211 Oakcrest 48.20
212 Ocean City 79.45
213 Ocean Twp. 76.36
214 Old Bridge 63.54
215 Old Tappan 72.47
216 Orange 57.11
217 Overbrook 35.69
218 Palisades Park 27.39
219 Palmyra 33.64
220 Paramus 72.93
221 Paramus Catholic 77.11
222 Park Ridge 73.19
223 Parsippany 61.32
224 Parsippany Hills 66.17
225 Pascack Hills 48.34
226 Pascack Valley 77.97
227 Passaic 50.94
228 Passaic Tech 66.87
229 Passaic Valley 63.31
230 Paul VI 35.29
231 Paulsboro 71.65
232 Pemberton 50.55
233 Pennington 51.26
234 Penns Grove 87.51
235 Pennsauken 57.15
236 Pennsville 46.77
237 Pequannock 53.08
238 Perth Amboy 50.78
239 Phillipsburg 89.34
240 Pinelands 42.37
241 Pingry 34.99
242 Piscataway 81.28
243 Pitman 17.09
244 Plainfield 47.17
245 Pleasantville 73.59
246 Pompton Lakes 54.69
247 Pope John 70.73
248 Princeton 13.59
249 Pt. Pleasant Beach 43.66
250 Pt. Pleasant Boro 52.37
251 Rahway 87.25
252 Ramapo 92.91
253 Ramsey 41.80
254 Rancocas Valley 65.03
255 Randolph 73.58
256 Raritan 70.08
257 Red Bank 74.23
258 Red Bank Catholic 75.19
259 Ridge 79.53
260 Ridgefield Park 45.68
261 Ridgewood 77.20
262 River Dell 74.26
263 Riverside 25.25
264 Robbinsville 45.19
265 Roselle 41.91
266 Roselle Park 20.46
267 Roxbury 49.79
268 Rumson 80.59
269 Rutherford 58.25
270 Saddle Brook 38.73
271 Salem 75.65
272 Sayreville 70.94
273 Schalick 43.21
274 Scotch Plains-Fanwood 46.55
275 Secaucus 46.63
276 Seneca 64.98
277 Seton Hall Prep 77.73
278 Shabazz 67.60
279 Shawnee 86.20
280 Shore 62.74
281 Snyder 37.58
282 Somerville 90.08
283 South Brunswick 73.49
284 South Hunterdon 40.70
285 South Plainfield 51.44
286 South River 49.83
287 Southern 66.59
288 Sparta 79.66
289 Spotswood 37.71
290 St. Augustine 82.87
291 St. Joe’s (Hamm.) 84.97
292 St. John Vianney 75.90
293 St. Joseph-Metuchen 72.15
294 St. Joseph-Montvale 96.62
295 St. Mary 44.17
296 St. Peter’s Prep 100.75
297 St. Thomas Aquinas 37.33
298 Steinert 53.95
299 Sterling 61.58
300 Summit 75.89
301 Sussex Tech 53.07
302 Teaneck 40.49
303 Tenafly 36.59
304 Timber Creek 80.67
305 Toms River East 57.16
306 Toms River North 73.33
307 Toms River South 50.14
308 Trenton 59.07
309 Triton 46.01
310 Union 79.00
311 Union City 73.07
312 Vernon 43.20
313 Verona 77.52
314 Vineland 63.84
315 Voorhees 48.70
316 Waldwick 65.16
317 Wall 77.59
318 Wallington 50.67
319 Wallkill Valley 56.78
320 Warren Hills 55.60
321 Washington Twp. 60.25
322 Watchung Hills 62.84
323 Wayne Hills 71.87
324 Wayne Valley 75.44
325 Weehawken 30.92
326 Weequahic 61.49
327 West Deptford 88.83
328 West Essex 71.27
329 West Milford 54.01
330 West Morris 80.61
331 West Orange 69.60
332 West Windsor-Plainsboro 34.02
333 Westfield 69.13
334 Westwood 64.19
335 Whippany Park 25.06
336 Wildwood 9.34
337 Williamstown 93.92
338 Willingboro 87.87
339 Winslow 66.85
340 Woodbridge 76.39
341 Woodbury 62.12
342 Wood-Ridge 42.54
343 Woodrow Wilson 80.11
344 Woodstown 63.54

New Jersey Top 20 by Strength Index
Area teams in bold.

1 St. Peter’s Prep 100.75
2 Mater Dei 97.51
3 St. Joseph-Montvale 96.62
4 Williamstown 93.92
5 Bergen Catholic 93.57
6 Ramapo 92.91
7 Somerville 90.08
8 Phillipsburg 89.34
9 West Deptford 88.83
10 Willingboro 87.87
11 Penns Grove 87.51
12 Rahway 87.25
13 Donovan Catholic 86.49
14 Shawnee 86.20
15 Don Bosco Prep 85.52
16 St. Joe’s (Hamm.) 84.97
17 Haddonfield 84.49
18 Lenape 84.05
19 Hillside 83.68
20 St. Augustine 82.87