APPENDIX

TABLE A-1: SUBSCALE SCORING BY CATEGORY
OF PROFESSIONAL ENGAGEMENT

Teacher Leaders Teacher  Professionals Interactive  Teachers Private Practice Teachers Number of areas in which "high" standard was met (0 to 3)  3 100% -- -- --  2 -- 49% 22% 0%  1 -- 43% 56% 15%  none -- 8% 23% 85% Total 100% 100% 100% 100% Number of areas in which at least a "medium" standard was met (0 to 3) 3 100% 100% -- -- 2 -- -- 80% 11% 1 -- -- 20% 50%  none -- -- 0% 39% Total 100% 100% 100% 100% By Area: Within-School  Interactions  High 100% 31% 24% 2%  Medium -- 69% 33% 18%  Below -- -- 43% 80% Total 100% 100% 100% 100% Beyond-School  Contacts High 100% 59% 44% 8% Medium -- 41% 27% 26% Below -- -- 28% 65% Total 100% 100% 100% 100% Leadership Activities High 100% 52% 30% 5% Medium -- 48% 21% 12% Below -- -- 49% 83% Total 100% 100% 100% 100%

TABLE A-2: HIGHLY CONSTRUCTIVIST TEACHERS AND EXEMPLARY
 COMPUTER USERS BY PROFESSIONAL ENGAGEMENT
 AND TYPE OF SCHOOL SAMPLE

% Exemplary Computer User % in Top Quartile on Constructivist Philosophy % in Top Quartile on Constructivist  Pedagogy Probability  Sample Professionally Engaged 22 38 46 Other 07 23 23 Purposive  Sample Professionally Engaged 30 50 53 Other 08 25 21

TABLE A-3: EFFECTS OF SCHOOL-BASED ACCESS TO
 TECHNOLOGY ON THE DIFFERENCE IN
teachers' involvement in computers between
high-ses and low-ses schools,
for professionally engaged teachers  and other teachers

Teachers' Involvement in Computers Index Score   Professional Engagement Level and School Socio-Economic Status (SES) Mean score without adjustments Mean score (and difference from  unadjusted score, identical cases) adjusted for Technology Hardware Access* (*A*) Mean score (and difference)  adjusted for Technology Hardware Access and School-Based Support for  Teachers' Technology Use** (*B*) All cases (*A*) cases  (*B*) cases Professionally Engaged  Teachers (n=379) (n=288) (n=170)     Top Quartile SES 1.18 1.11 1.28 .91 (—.20) 1.00 (—.28) 2nd Quartile  SES .70 .62 1.03 .59 (—.03) .89 (—.15) 3rd Quartile  SES .66 .81 .81 .86 (+.05) .86 (+.05) Bottom Quartile  SES .14 .34 .22 .45 (+.11) .41 (+.19) % reduction in difference between top and bottom quartiles for identical cases -- -- -- 40% 44% Other  Teachers (n=1784) (n=1325) (n=753)     Top Quartile SES —.01 .00 —.06 .05 (+.05) .02 (+.08) 2nd Quartile  SES —.12 —.25 —.15 —.20 (+.05) —.14 (+.01) 3rd Quartile  SES —.25 —.25 —.33 —.05 (+.20) —.08 (+.25) Bottom Quartile  SES —.39 —.36 —.32 —.24 (+.12) —.20 (+.12) % reduction in difference between top and bottom quartiles for identical cases -- -- -- 20% 14% *Technology Hardware Access variables included number of classroom computers, school-provided teacher  technology resources and school-level technology density  indicators. **School support for technology use measured by school-level data on hours of training provided per capita and percent of technology investment going for support and  training Sample: Probability  sample.

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