I love digging these up. Here are a few I have now been able to confirm and add:
Largest Lead Before Opponent Scored
(B) 40 Franklin vs. Geneva 1921-22
(B) 33 Herron vs. Indiana Math & Science Academy 2013-14
(B) 32 Northview vs. North Vermillion 1996-97
(B) 27 Frankfort vs. Western Boone 2001-02
(B) 27 Franklin Central vs. Bedford North Lawrence 2006-07
(B) 25 Whiteland vs. Scottsburg 2015-16
(B) 23 University vs. Shortridge 2015-16
(B) 22 University vs. Anderson Prep 2015-16
(B) 20 Crown Point vs. East Chicago 1998-99
(B) 19 Franklin vs. Union 1919-20
(B) 19 University vs. Eminence 2014-15
(G) 48 North Decatur vs. Waldron 1982-83
(G) 45 Luers vs. South Adams 2011-12
(G) 43 Rushville vs. Shelbyville 2009-10
(G) 41 Columbus East vs. Bloomington North 2015-16
(G) 41 Northridge vs. Bethany Christian 2009-10
(G) 40 Frontier vs. North White 2004-05
(G) 40 Jac-Cen-Del vs. Oldenburg 2015-16
(G) 39 Bloomington South vs. Arlington 2012-13
(G) 35 Oregon-Davis vs. Frontier 2013-14
(G) 32 Indy Northwest vs. Manual 2012-13
Largest 4th Quarter Come From Behind Victory
(B) Down 29 - South Dearborn (55) vs. East Central (54) 2011-12
(B) Down 23 - Greensburg (67) vs. South Dearborn (65) 2010-11
(B) Down 22 - Twin Lakes (81) vs. Peru (80) 1999-00
(B) Down 21 - Connersville (70) vs. Whiteland (67) 2003-04
(B) Down 19 - Ben Davis (107) vs. North Central (103) OT! 2001-02
(B) Down 18 - Floyd Central (93) vs. Pike (86) 1970-71
(B) Down 18 - TH North (71) vs. Pike (70) 1993-94
(B) Down 17 - Floyd Central (93) vs. Seymour (86) 1970-71
(B) Down 17 - FW South (77) vs. Luers (75) 2009-10
(B) Down 16 - Brownstown (74) vs. Paoli (68)1974-75
(B) Down 16 - Connersville (55) vs. Centerville 50 2009-10
(B) Down 16 - Gary West (65) vs. Gary Wallace (64) 2010-11
(B) Down 16 - Mishawaka (77) vs. LaPorte (71) 2OT! 1992-93
(G) Down 18 - Huntington North (67) vs. Kokomo (60) 1999-00
(G) Down 16 - Brownsburg (62) vs. Lafayette Jeff (57) 2004-05
(G) Down 15 - Warsaw (78) vs. Huntington North (75) 2009-10
(G) Down 14 - Greenwood (52) vs. Franklin (48) OT! 2009-10
(G) Down 14 - Triton Central (53) vs. Whiteland (52) 2014-15
(G) Down 13 - Rossville (56) vs. Tri-Central (53) 2009-10
Most Consecutive Wins
(B) 50 Lawrence North 2004-06
(B) 49 Bloomington South 2008-09
(B) 45 Crispus Attucks 1955-56
(B) 40 Marion 1984-86
(B) 39 Michigan City 1966-67
(B) 38 Vincennes 1921-22
(B) 36 South Bend Central 1956-57
(G) 81 Ben Davis 2008-11
(G) 57 Northrop 1985-87
(G) 55 Bedford North Lawrence 1990-92
(G) 55 Martinsville 1996-98
(G) 50 North Vermillion 2001-03
(G) 48 Bloomfield 1974-76
(G) 45 Ladywood-St. Agnes 1974-76
(G) 45 East Chicago Roosevelt 1976-78
(G) 44 Huntington North 1994-96
(G) 43 South Bend Washington 2006-08
Most Rebounds in a Season
(B) 720 Kent Benson - New Castle 1972-73
(B) 672 Willie Merriweather -Crispus Attucks 1954-55
(B) 583 Tom Cutter - Lafayette Catholic 1972-73
(B) 556 Wayne Bright - Bell Union 1964-65
(B) 516 Larry Bird - Springs Valley 1973-74
(B) 505 Don Hatten - Merrillville 1955-56
(B) 468 Mike Erwin - South Spencer 1971-72
(B) 457 Glenn Robinson - Gary Roosevelt 1990-91
(B) 448 Alan Henderson - Brebeuf 1990-91
(B) 442 Steve Lochmueller - Tell City 1970-71
(G) 412 Ta'Shia Phillips - Brebeuf 2006-07
(G) 411 Nekisha Stevens - IN Northwest 2001-02
(G) 390 Dawn Davenport - Eastbrook 1984-85
(G) 378 Talaya Earls - IN Northwest 2008-09
(G) 360 Normela Upshawe Haire - EC Roosevelt 1976-77
(G) 357 Jenny Moore - Providence 1995-96
(G) 348 Anissa Lewis - Jeffersonville - 1990-91
(G) 347 Elana Eickholtz - Restoration Christian 2006-07
(G) 345 Amber Forkert - Jac-Cen-Del 2001-02
(G) 345 Normela Upshawe Haire - EC Roosevelt 1978-79
Most Career Rebounds
(B) 1638 George McGinnis - Indy Washington 1966-69
(B) 1616 Kent Benson - New Castle 1970-73
(B) 1521 Jerry Schellenberg - Floyd Central 1970-73
(B) 1504 Wayne Bright - Bell Union/Fillmore 1963-66
(B) 1374 Deshaun Thomas - Luers 2006-09
(B) 1358 Mike Erwin - South Spencer 1969-72
(B) 1237 Dan Palombizio - MC Rogers 1978-81
(B) 1218 Curt Gilstrap - Orleans 1971-74
(B) 1127 Eric Wahl - Frankfort 1992-95
(B) 1103 Kent Carson - Hamilton Hts 1965-68
(B) 1085 Ralph Taylor - Indy Washington 1962-65
(B) 1077 Steve Downing - Indy Washington 1966-69
(B) 1058 Greg Oden - Lawrence North 2003-06
(G) 1308 Ta'Shia Phillips - Brebeuf 2006-07
(G) 1269 Anisa Lewis - Jeffersonville 1988-91
(G) 1227 Normela Upshawe Haire - EC Roosevelt 1976-79
(G) 1156 Tori Schickel - Mater Dei 2012-15
(G) 1093 Abby Conklin - Charlestown 1992-93
(G) 1076 Ally Lehman - Indian Creek 2010-2013
(G) 1011 Heather Farrell - Avon 1988-89
(G) 1011 Ruth Riley - North Miami 1994-97
(G) 1086 Jacqueline Batteast - SB Washington 1998-01
(G) 1006 Jane Calhoun - Tipton 1984-87
(G) 1006 Hillary Fox - Barr-Reeve 2006-09
Largest Lead Before Opponent Scored
(B) 40 Franklin vs. Geneva 1921-22
(B) 33 Herron vs. Indiana Math & Science Academy 2013-14
(B) 32 Northview vs. North Vermillion 1996-97
(B) 27 Frankfort vs. Western Boone 2001-02
(B) 27 Franklin Central vs. Bedford North Lawrence 2006-07
(B) 25 Whiteland vs. Scottsburg 2015-16
(B) 23 University vs. Shortridge 2015-16
(B) 22 University vs. Anderson Prep 2015-16
(B) 20 Crown Point vs. East Chicago 1998-99
(B) 19 Franklin vs. Union 1919-20
(B) 19 University vs. Eminence 2014-15
(G) 48 North Decatur vs. Waldron 1982-83
(G) 45 Luers vs. South Adams 2011-12
(G) 43 Rushville vs. Shelbyville 2009-10
(G) 41 Columbus East vs. Bloomington North 2015-16
(G) 41 Northridge vs. Bethany Christian 2009-10
(G) 40 Frontier vs. North White 2004-05
(G) 40 Jac-Cen-Del vs. Oldenburg 2015-16
(G) 39 Bloomington South vs. Arlington 2012-13
(G) 35 Oregon-Davis vs. Frontier 2013-14
(G) 32 Indy Northwest vs. Manual 2012-13
Largest 4th Quarter Come From Behind Victory
(B) Down 29 - South Dearborn (55) vs. East Central (54) 2011-12
(B) Down 23 - Greensburg (67) vs. South Dearborn (65) 2010-11
(B) Down 22 - Twin Lakes (81) vs. Peru (80) 1999-00
(B) Down 21 - Connersville (70) vs. Whiteland (67) 2003-04
(B) Down 19 - Ben Davis (107) vs. North Central (103) OT! 2001-02
(B) Down 18 - Floyd Central (93) vs. Pike (86) 1970-71
(B) Down 18 - TH North (71) vs. Pike (70) 1993-94
(B) Down 17 - Floyd Central (93) vs. Seymour (86) 1970-71
(B) Down 17 - FW South (77) vs. Luers (75) 2009-10
(B) Down 16 - Brownstown (74) vs. Paoli (68)1974-75
(B) Down 16 - Connersville (55) vs. Centerville 50 2009-10
(B) Down 16 - Gary West (65) vs. Gary Wallace (64) 2010-11
(B) Down 16 - Mishawaka (77) vs. LaPorte (71) 2OT! 1992-93
(G) Down 18 - Huntington North (67) vs. Kokomo (60) 1999-00
(G) Down 16 - Brownsburg (62) vs. Lafayette Jeff (57) 2004-05
(G) Down 15 - Warsaw (78) vs. Huntington North (75) 2009-10
(G) Down 14 - Greenwood (52) vs. Franklin (48) OT! 2009-10
(G) Down 14 - Triton Central (53) vs. Whiteland (52) 2014-15
(G) Down 13 - Rossville (56) vs. Tri-Central (53) 2009-10
Most Consecutive Wins
(B) 50 Lawrence North 2004-06
(B) 49 Bloomington South 2008-09
(B) 45 Crispus Attucks 1955-56
(B) 40 Marion 1984-86
(B) 39 Michigan City 1966-67
(B) 38 Vincennes 1921-22
(B) 36 South Bend Central 1956-57
(G) 81 Ben Davis 2008-11
(G) 57 Northrop 1985-87
(G) 55 Bedford North Lawrence 1990-92
(G) 55 Martinsville 1996-98
(G) 50 North Vermillion 2001-03
(G) 48 Bloomfield 1974-76
(G) 45 Ladywood-St. Agnes 1974-76
(G) 45 East Chicago Roosevelt 1976-78
(G) 44 Huntington North 1994-96
(G) 43 South Bend Washington 2006-08
Most Rebounds in a Season
(B) 720 Kent Benson - New Castle 1972-73
(B) 672 Willie Merriweather -Crispus Attucks 1954-55
(B) 583 Tom Cutter - Lafayette Catholic 1972-73
(B) 556 Wayne Bright - Bell Union 1964-65
(B) 516 Larry Bird - Springs Valley 1973-74
(B) 505 Don Hatten - Merrillville 1955-56
(B) 468 Mike Erwin - South Spencer 1971-72
(B) 457 Glenn Robinson - Gary Roosevelt 1990-91
(B) 448 Alan Henderson - Brebeuf 1990-91
(B) 442 Steve Lochmueller - Tell City 1970-71
(G) 412 Ta'Shia Phillips - Brebeuf 2006-07
(G) 411 Nekisha Stevens - IN Northwest 2001-02
(G) 390 Dawn Davenport - Eastbrook 1984-85
(G) 378 Talaya Earls - IN Northwest 2008-09
(G) 360 Normela Upshawe Haire - EC Roosevelt 1976-77
(G) 357 Jenny Moore - Providence 1995-96
(G) 348 Anissa Lewis - Jeffersonville - 1990-91
(G) 347 Elana Eickholtz - Restoration Christian 2006-07
(G) 345 Amber Forkert - Jac-Cen-Del 2001-02
(G) 345 Normela Upshawe Haire - EC Roosevelt 1978-79
Most Career Rebounds
(B) 1638 George McGinnis - Indy Washington 1966-69
(B) 1616 Kent Benson - New Castle 1970-73
(B) 1521 Jerry Schellenberg - Floyd Central 1970-73
(B) 1504 Wayne Bright - Bell Union/Fillmore 1963-66
(B) 1374 Deshaun Thomas - Luers 2006-09
(B) 1358 Mike Erwin - South Spencer 1969-72
(B) 1237 Dan Palombizio - MC Rogers 1978-81
(B) 1218 Curt Gilstrap - Orleans 1971-74
(B) 1127 Eric Wahl - Frankfort 1992-95
(B) 1103 Kent Carson - Hamilton Hts 1965-68
(B) 1085 Ralph Taylor - Indy Washington 1962-65
(B) 1077 Steve Downing - Indy Washington 1966-69
(B) 1058 Greg Oden - Lawrence North 2003-06
(G) 1308 Ta'Shia Phillips - Brebeuf 2006-07
(G) 1269 Anisa Lewis - Jeffersonville 1988-91
(G) 1227 Normela Upshawe Haire - EC Roosevelt 1976-79
(G) 1156 Tori Schickel - Mater Dei 2012-15
(G) 1093 Abby Conklin - Charlestown 1992-93
(G) 1076 Ally Lehman - Indian Creek 2010-2013
(G) 1011 Heather Farrell - Avon 1988-89
(G) 1011 Ruth Riley - North Miami 1994-97
(G) 1086 Jacqueline Batteast - SB Washington 1998-01
(G) 1006 Jane Calhoun - Tipton 1984-87
(G) 1006 Hillary Fox - Barr-Reeve 2006-09
