The study compared the syntactic complexity and the use of logical connectors in summaries written in French by two groups of students: speakers of French as first language (L1) and peers in a French-immersion program (L2) from grade nine to university. Both L1 and L2 groups of university students demonstrated more general complexity in their written summaries than less mature writers. However, the use of phrasal elaboration was apparent just at the upper secondary and university levels with L1 students. Both groups generally tend to overuse causal connectors while underusing additive and adversative connectors compared to the author’s use in the source text. Yet both groups employ significantly more adversative connectors just at the post-secondary level. The only difference observed between L1 and L2 writers was in the diversity of connector words used in the summary, with the former group using a richer, more diverse vocabulary. Several measures for succinctness differentiated L1 and L2 students in early secondary with the latter group condensing the source text less than L1 students. Correlation analysis suggested that many measures of syntactic complexity and connector use are inextricably linked.