The following table reports results from a linear probability model, where the dependent variable is dummy measuring the probability of being enrolled in the academic track (upper secondary) at the time of the interview. Dataset: Italian Labour Force Survey; Population of reference: Italian, 15-16 years of age. (source: Guetto, R., Panichella, N., 2018, Family Arrangements and Inequality of Educational Opportunities. An Analysis of Social Inequality in Upper Secondary School in Italy, work in progress). Comment results from the model Table 1 - Probability of being enrolled in a 5-year upper secondary academic track. Linear probability models: beta coefficients and confidence intervals at 95% on parentheses. Model 1 Model 2 Model 3 Family structure [ref: two biological parents married] two biological parents (cohabitants) -0.10*** (-0.12 - -0.08) -0.09*** (-0.11 - -0.07) -0.08*** (-0.10 - -0.06) One biological + one non biological -0.11*** (-0.13 - -0.09) -0.11*** (-0.13 - -0.09) -0.09*** (-0.11 - -0.07) One biological (separated/divorced) -0.05*** (-0.06 - -0.04) -0.03*** (-0.04 - -0.02) -0.02*** (-0.03 - -0.01) One biological (widow) -0.04*** (-0.06 - -0.02) 0.01 (-0.00 - 0.03) 0.02** (0.00 - 0.04) Social class of origin [ref. Service class] White collar -0,04*** (-0,06 - -0,03) -0,04*** (-0,05 - -0,02) Working class -0.24*** (-0,25 - -0,23) -0.14*** (-0,15 - -0,12) Birth order [ref: only child] First-born -0.00 (-0.01 - 0.01) Second-born -0.04*** (-0.04 - -0.03) Third(or more)-born -0.03*** Constant 0.31*** (0.31 - 0.31) 0.75*** (0.74 - 0.76) 0.76*** (0.73 - 0.78) Observations 124,284 123,098 123,045 R-squared 0.00 0.19 0.21 Model 1 Model 2 Model 3 Family structure [ref: two biological parents married] two biological parents (cohabitants) -0.10*** (-0.12 - -0.08) -0.09*** (-0.11 - -0.07) -0.08*** (-0.10 - -0.06) One biological + one non biological -0.11*** (-0.13 - -0.09) -0.11*** (-0.13 - -0.09) -0.09*** (-0.11 - -0.07) One biological (separated/divorced) -0.05*** (-0.06 - -0.04) -0.03*** (-0.04 - -0.02) -0.02*** (-0.03 - -0.01) One biological (widow) -0.04*** (-0.06 - -0.02) 0.01 (-0.00 - 0.03) 0.02** (0.00 - 0.04) Social class of origin [ref. Service class] White collar -0,04*** (-0,06 - -0,03) -0,04*** (-0,05 - -0,02) Working class -0.24*** (-0,25 - -0,23) -0.14*** (-0,15 - -0,12) Birth order [ref: only child] First-born -0.00 (-0.01 - 0.01) Second-born -0.04*** (-0.04 - -0.03) Third(or more)-born -0.03*** Constant 0.31*** (0.31 - 0.31) 0.75*** (0.74 - 0.76) 0.76*** (0.73 - 0.78) Observations 124,284 123,098 123,045 R-squared 0.00 0.19 0.21.